CN201904289U - Short-circuit protection mechanism for miniature circuit breaker with high breaking capacity - Google Patents
Short-circuit protection mechanism for miniature circuit breaker with high breaking capacity Download PDFInfo
- Publication number
- CN201904289U CN201904289U CN2011200004057U CN201120000405U CN201904289U CN 201904289 U CN201904289 U CN 201904289U CN 2011200004057 U CN2011200004057 U CN 2011200004057U CN 201120000405 U CN201120000405 U CN 201120000405U CN 201904289 U CN201904289 U CN 201904289U
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- CN
- China
- Prior art keywords
- short
- circuit breaker
- torsion spring
- protection mechanism
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a short-circuit protection mechanism for a miniature circuit breaker with high breaking capacity. The short-circuit protection mechanism comprises a bracket, wherein a U-shaped magnetic yoke is welded at one end of the bracket; a bimetallic strip is arranged on the inner side of the U-shaped magnetic yoke; the top of the bimetallic strip is connected with a movable contact through a copper lead wire; the copper lead wire is welded with the bimetallic strip and the movable contact respectively; a torsion spring is clamped on the side wall of the U-shaped magnetic yoke; a shaft is arranged in the torsion spring; one end of the torsion spring is propped against an armature; and the bottom of the bracket is connected with a wiring board through a connecting part. The short-circuit protection mechanism has the benefits of simple technology, reasonable structure, low consumption of materials, lower cost and improved product quality, solves the problem that a solenoid tripping mechanism demands much on processing, resulting in frequent failure in closing the circuit breaker in the production and transportation process, prevents the interior of an iron core from seizing-up, and avoids the situation that the circuit breaker is in the short-circuit state and can not be opened in the operation process of the product.
Description
Technical field
The utility model relates to a kind of high breaking miniature circuit breaker short current protective mechanism.
Background technology
Development along with modern science and technology; electricity is the important element that people's daily life can't be left; Electrical Safety is also paid attention to by people day by day; people use various circuit breakers to realize that dangerous timely cut-out circuit appears in electricity consumption; safety with protection people's life, property; as the short current protective mechanism of one of circuit breaker critical component, the mode of its processing safety, reliability, useful life and action all is related to the fail safe and the reliability of circuit breaker.Existing short current protective mechanism mainly is to finish protection by the solenoid type release, the solenoid type release is made up of when circuit breaker moves magnetic plug, moving iron core, static iron core, push rod, spring, coil rack, load is short-circuited and promotes push rod when the powerful electromagnetic field of phenomenon magnetic plug generation makes the iron core adhesive move the iron core adhesive, and push rod connects snap close dropout structure makes breaker open operation play defencive function; But this short current protective mechanism technological requirement height makes circuit breaker close not brake application in the process of producing and transporting easily, and circuit breaker short circuit occurring in addition in the product running can not the separating brake phenomenon.
The utility model content
The purpose of this utility model provides a kind of high breaking miniature circuit breaker short current protective mechanism; to overcome existing solenoid type tripping mechanism technological requirement height; produce and the process of transportation in make circuit breaker close not brake application easily, the deficiency that circuit breaker short circuit can not separating brake etc. appears in the product running in addition.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of high breaking miniature circuit breaker short current protective mechanism; comprise support; one end of support is welded with U type yoke; the inboard of U type yoke is provided with bimetal leaf, and the top of bimetal leaf is connected with moving contact by copper conductor, and wherein copper conductor welds with bimetal leaf and moving contact respectively; be arranged with torsion spring on the sidewall of described U type yoke; the inside of torsion spring is provided with axle, and an end of torsion spring is resisted against on the armature, and the bottom of described support is connected with terminal block by connector.
The beneficial effects of the utility model are: technology is simple, and is rational in infrastructure, and economical with materials reduces cost, and improves the quality of product, solved solenoid type tripping mechanism technological requirement height, makes circuit breaker close the not phenomenon of brake application easily in the process of producing and transporting; Avoid occurring in the iron core stuck phenomenon in addition, the situation that circuit breaker short circuit can not separating brake in the product running, can not occur.
Description of drawings
With reference to the accompanying drawings the utility model is described in further detail below.
Fig. 1 is the structural representation of the described a kind of high breaking miniature circuit breaker short current protective mechanism of the utility model embodiment.
Among the figure:
1, support; 2, U type yoke; 3, bimetal leaf; 4, copper conductor; 5, moving contact; 6, torsion spring; 7, axle; 8, armature; 9, connector; 10, terminal block.
Embodiment
As shown in Figure 1; the described a kind of high breaking miniature circuit breaker short current protective mechanism of the utility model embodiment; comprise support 1; one end of support 1 is welded with U type yoke 2; the inboard of U type yoke 2 is provided with bimetal leaf 3; the top of bimetal leaf 3 is connected with moving contact 5 by copper conductor 4; wherein copper conductor 4 welds with bimetal leaf 3 and moving contact 5 respectively; be arranged with torsion spring 6 on the sidewall of described U type yoke 2; the inside of torsion spring 6 is provided with axle 7; one end of torsion spring 6 is resisted against on the armature 8, and the bottom of described support 1 is connected with terminal block 10 by connector 9.
The short-circuit protection characteristic of circuit breaker mainly is to be finished by U type yoke 2 and armature 8; U type yoke 2 is welded on the support 1 according to process point; armature 8 has been combined in by axle 7 and torsion spring 6; when load is short-circuited fault when circuit breaker is in "on" position; produce powerful electromagnetic field in U type yoke 2 and make armature 8 adhesives; masterpiece during adhesive is used for making breaker open operation on the snap close of tripping mechanism, reaches the function of short-circuit protection.
Claims (1)
1. high breaking miniature circuit breaker short current protective mechanism; comprise support (1); it is characterized in that: an end of described support (1) is welded with U type yoke (2); the inboard of U type yoke (2) is provided with bimetal leaf (3); the top of bimetal leaf (3) is connected with moving contact (5) by copper conductor (4); wherein copper conductor (4) welds with bimetal leaf (3) and moving contact (5) respectively; be arranged with torsion spring (6) on the sidewall of described U type yoke (2); the inside of torsion spring (6) is provided with axle (7); one end of torsion spring (6) is resisted against on the armature (8), and the bottom of described support (1) is connected with terminal block (10) by connector (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200004057U CN201904289U (en) | 2011-01-04 | 2011-01-04 | Short-circuit protection mechanism for miniature circuit breaker with high breaking capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200004057U CN201904289U (en) | 2011-01-04 | 2011-01-04 | Short-circuit protection mechanism for miniature circuit breaker with high breaking capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201904289U true CN201904289U (en) | 2011-07-20 |
Family
ID=44274882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200004057U Expired - Fee Related CN201904289U (en) | 2011-01-04 | 2011-01-04 | Short-circuit protection mechanism for miniature circuit breaker with high breaking capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201904289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783437A (en) * | 2017-01-20 | 2017-05-31 | 温州市新蓝天电器有限公司 | A kind of breaker |
-
2011
- 2011-01-04 CN CN2011200004057U patent/CN201904289U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783437A (en) * | 2017-01-20 | 2017-05-31 | 温州市新蓝天电器有限公司 | A kind of breaker |
| CN106783437B (en) * | 2017-01-20 | 2018-09-07 | 温州市新蓝天电器有限公司 | A kind of breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20160104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |